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Overview of the New Construction General Permit: A New Way of Doing Things

The new Construction General Permit (CGP) in California brings significant changes to construction projects. Learn about key changes, permit registration documents, risk determination, SWPPP qualifications, and more.

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Overview of the New Construction General Permit: A New Way of Doing Things

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  1. Overview of the New Construction General Permit A New Way of Doing Things John Teravskis Compliance Specialist

  2. Permit Summary • The new Construction General Permit (CGP) was adopted on September 2, 2009. • Goes into effect July 1, 2010. • Existing dischargers subject to State Water Board Order No. 99-08-DWQ will continue coverage under 99-08-DWQ until July 1, 2010. After July 1, 2010, all NOIs subject to State Water Board Order No. 99-08-DWQ will be terminated. Existing dischargers shall electronically file their PRDs no later than July 1, 2010.

  3. Permit Summary New Permit Old Permit • The new permit will significantly change the way construction projects are handled in California. • Don’t wait until 7/01/10 … get ready now! • It is 1” thicker than the previous version! Over 1” Thicker than the previous permit

  4. Key Changes • Permit Registration Documents • Risk Determination • Qualifications for SWPPP developers • Qualification for SWPPP/job site inspectors • Rain Event Action Plans • Minimum BMPs • Numeric Effluent Limits and Action Levels • Monitoring (up to 3 times per day) • Reporting

  5. Over 30 New Acronyms! NOEC NOI NOT NPDES NRCS NTR NTU O&M PAC PAM PASS PoP POTW PRD QAMP QA/QC REAP ROWD RUSLE RW SMARTS SS SSC SUSMP SW SWARM SWAMP SWMM SWMP SWPPP TC TMDL TSS USACOE USC USEPA USGS WDID WET WRCC WQO WQS ASBS ASTM ATS BASMAA BAT BCT BMP BOD BPJ CAFO CEQA CFR CIWQS CKD COC CPESC CPSWQ CSMP CTB CTR CWA CWP DADMAC DDNR DFG DHS DWQ ELAP ESC HSPF JTU LID LOEC LRP LUP MATC MDL MS4 MUSLE NAL NEL

  6. New Acronyms! We are going to use some of the new acronyms to walk us through the permit changes. • PRDs • LRP • RUSLE • QSD • QSP • REAP • NAL/NEL • ATS • SMARTS

  7. PRDs Permit Registration Documents (PRDs) need to be submitted before start of construction • Notice of Intent (NOI) • Risk Assessment • Site Map • Storm Water Pollution Prevention Plan • Annual Fee • Signed Certification Statement

  8. LRP Legally Responsible Person (LRP) • The LRP must electronically file PRDs prior to the commencement of construction activity. • Must be the owner or a high level officer of the organization. • For a corporation: a responsible corporate officer. For the purpose of this section, a responsible corporate officer means: (a) a president, secretary, treasurer, or vice-president of the corporation in charge of a principal business function, or any other person who performs similar policy or decision-making functions for the corporation; or (b) the manager of the facility if authority to sign documents has been assigned or delegated to the manager in accordance with corporate procedures. • For a municipality, State, Federal, or other public agency: either a principal executive officer or ranking elected official.

  9. RUSLE RUSLE - Revised Universal Soil Loss Equation one of the things used in the Risk Determination. • First Half of the Risk Determination factor – Sediment Discharge Risk • Calculate soil loss using the RUSLE equation • A = (R) (K) (LS) (C) (P) • Second Half of the Risk Determination factor – Receiving Water Risk • Sediment sensitive water; 303(d) listed or TMDL for sediment-related pollutant; or beneficial Uses of COLD, SPAWN, and MIGRATORY For more information on RUSLE … http://www.iwr.msu.edu/rusle/ L is the slope length factor, representing the effect of slope length on erosion. S is the slope steepness. Represents the effect of slope steepness on erosion. K factor is soil erodibility factor which represents both susceptibility of soil to erosion and the rate of runoff. (R) = Rainfall Erosivity Factor

  10. RISK Levels • Three Risk Levels: • Small Construction Rainfall Erosivity Waiver • 1 to 5 Acres, with an R value <5

  11. QSD Qualified SWPPP Developer Effective 9/02/11, a QSD shall have attended a State Water Board-sponsored or approved QSD training course.

  12. QSP Qualified SWPPP Practioner Effective 9/02/11, a QSP shall have attended a State Water Board-sponsored or approved QSP training course.

  13. REAPs Rain Event Action Plan • Required of Risk Levels 2 & 3 • QSP must develop a REAP 48 hours prior to any likely precipitation event. A likely precipitation event is any weather pattern that is forecast to have a 50% or greater probability of producing precipitation in the project area. The QSP must obtain a printed copy of precipitation forecast information from the National Weather Service Forecast Office entering the zip code of the project’s location at http://www.srh.noaa.gov/forecast .

  14. SSC Suspended Sediment Concentration, this is not TSS! • The new CGP requires observations and, for Risk Levels 2 & 3, sampling. • Projects at Risk Levels 2 & 3 must have a written Storm Water Monitoring Plan. • All projects still must sample, as in the current permit, if there is reason to believe that non-visible pollutants are in storm water discharges.

  15. Risk Level 1 Monitoring and Sampling for Risk Level 1 • Quarterly non-storm water observations • Base line, during, and after storm observations • Conditional sampling for non-visible pollutants

  16. Risk Level 2 Qualifying Rain Event: Any event that produces 0.5 inches or more precipitation with a 48 hour or greater period between rain events. Monitoring and Sampling for Risk Level 2 • Same as Level 1 … but add: • REAP Preparation • Sample and analyze 3 times per day for pH and turbidity during qualifying rain events.

  17. Risk Level 3 Monitoring and Sampling for Risk Level 3 • Same as Level 2 … but add: • Electronic submission of monitoring results within 5 days • For turbidity NEL violations, test for SSC • Upstream and downstream receiving water monitoring • Bioassessment

  18. NALs & NELs NAL - Numeric Action Levels NEL - Numeric Effluent Limitations

  19. NALs & NELs NAL - Numeric Action Levels NEL - Numeric Effluent Limitations • If a NEL is exceeded, the discharger is in violation of this General Permit and must electronically file the monitoring results in violation within 5 business days of obtaining the results. • Discharges of storm water from Risk Level 3 sites must comply with applicable NELs, unless the storm event causing the discharges is determined after the fact to be equal to or larger than the Compliance Storm Event; a 5-year, 24-hour storm as determined by using this map:

  20. NALs & NELs Compliance storm for Lathrop is >1.6 inches. NAL - Numeric Action Levels NEL - Numeric Effluent Limitations • If a NEL is exceeded, the discharger is in violation of this General Permit and must electronically file the monitoring results in violation within 5 business days of obtaining the results. • Discharges of storm water from Risk Level 3 sites must comply with applicable NELs unless the storm event causing the discharges is determined after the fact to be equal to or larger than the Compliance Storm Event; a 5-year, 24-hour storm as determined by using this map:

  21. BMPs Best Management Practices (OK, not a new acronym, but definitely a new emphasis!) • Attachments C, D, and E define what BMPs are required for each Risk Level. • BMPs include: • Good Site Management “Housekeeping” • Non-storm Water Management • Erosion Control • Sediment Controls • Run-on and Runoff Controls

  22. ATS Active Treatment System • Attachments F provides ATS requirements. • Requirements include: • Designed by a CPESC, CPSWQ, or a California Registered Engineer • Field “Jar Tests” to determine proper operation. • Instrumentation for turbidity, pH, residual chlorine, flow rate. • O&M and QA/QC Plans • Training • Monitoring, Sampling, and Monthly Reporting

  23. SMARTS Stormwater Multi Application Reporting and Tracking System • All dischargers are required to electronically submit an annual report by September 1. The annual report must include documentation of training. • Risk 2 NAL exceedance reporting • Risk 3 electronically submit sampling results and NAL & NEL exceedances • Monthly ATS reports

  24. Dates to Remember ! • Permit Adoption Date: September 2, 2009 • Permit Effective Date: July 1, 2010 • Interim QSD effective: July 1, 2010 • QSD/QSP Training: September 2, 2011 • Post -construction grandfathering through September 2, 2012 • Risk Determination grandfathering through September 2, 2011 • First annual report due September 1, 2010

  25. For more information, please contact me at … Thank you! jteravskis@wgr-sw.com (209) 334-5363, ext. 202 John Teravskis WGR Southwest, Inc. 315 W. Pine St., Suite 8 Lodi, CA 95240

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